Mahou Shoujo nara 1105-goushitsu ni Imasu.  

There is a magical girl in room 1105., 魔法少女なら1105号室にいます。

Mitama, a junior high school student, unexpectedly became a Magical Girl. This halted Jeddos' plan to cause destruction on Earth within just 12 pages. But this was only the beginning of their extraordinary journey as they lived together under one roof in their everyday life as a Magical Girl and Demon King. Get ready for a slice-of-life comedy series!